The short answer
Small, hollow or slow ice on the T family points at supply pressure or a partially blocked fill path; no ice at all points at a stopped supply, an arm or switch that has been left off, or a mould that has iced solid. On the four models listed below those two stories separate immediately and lead to different places.
What you observe on these models
- Production stopped after the filter was changed — Air in the line, or a filter not seated, both of which show up here first.
- It makes a batch and then stops for days — A fill valve that is marginal, or a bin switch that has stuck.
- Ice is clumping into one mass in the bin — Slow production plus a freezer that is cycling warm, so cubes fuse rather than stay loose.
- Water dispenses but no ice is made — Useful: it proves supply reaches the appliance and moves the fault past the valve.
- NEAR MISS - water pooling under the unit — That is the leak page for the T family, not this one.
Causes, most likely first on the T family
- Freezer temperature — First on the four models below. Ice making is the first thing to suffer when a freezer drifts up, so a slow ice maker is often a temperature complaint that has not been recognised yet. Measure before anything else.
- Supply and filter — Second. A restricted or closed supply produces exactly the small, hollow, slow cubes that owners describe, and both ends of it are checkable without tools.
- Arm, switch and bin — Third: free to check, commonly the answer, and easy to knock into the off position while retrieving something from the freezer.
- Fill tube ice and the ice maker assembly — Last, and the only part of the list that is a real repair rather than a check.
Check in this order, and why
- First: describe the ice you are getting — None, small, hollow or fused. Each of those points somewhere different, and it is the best evidence you have on the T family.
- Second: work the supply from the wall inwards — Household valve fully open, line not kinked behind the cabinet, filter in date and seated properly.
- Third: look at the mould — Empty and dry means nothing is arriving. A solid block means water arrives and harvest has stopped. Those are two different repairs.
- Fourth: change one thing at a time — Ice takes hours, so two changes at once make the result unreadable. This is the discipline that decides how long the fault takes to find.
Before you open anything
Safety
Unplug the refrigerator or switch off its breaker before removing any panel or reaching into the ice maker area; a capacitor can hold a charge after the power is off. Close the household water valve before disturbing any fitting. Never thaw a fill tube with a heat gun or an open flame - warm water and patience are the only safe methods.
Models in the T family
Reference| Model number | Family key |
|---|---|
| T18IF905SP | bosch:refrigerator:t |
| T30IB905SP | bosch:refrigerator:t |
| T30IR905SP | bosch:refrigerator:t |
| T36IT905NP | bosch:refrigerator:t |
When to call a technician
Everything on the supply side of the four models below is owner work: the household valve, the line, the filter, the arm and the bin. Everything inside the freezer wall is not. Call sooner if the freezer itself is not holding temperature, because that is a cooling fault that happens to show up as missing ice.
Sources — The symptom-report corpus recorded against Bosch T refrigerator pages for this fault is cited below. No share is quoted from it anywhere on this page: the snapshot reaches this page as a provenance chain without values, so every ordering here is technician judgement rather than a measured proportion.
Documented- amazon-reviews — amazon-reviews, fetched 2026-09-02
Other faults covered for the T family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
